Não informado. (2000). Technical note. U.S. Department of Commerce, National Bureau of Standards.
Chicago-Zitierstil (17. Ausg.)Não informado. Technical Note. Washington: U.S. Department of Commerce, National Bureau of Standards, 2000.
MLA-Zitierstil (8. Ausg.)Não informado. Technical Note. U.S. Department of Commerce, National Bureau of Standards, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.